- THROWF(not_found_error, 0, "Bad config key: %s", name.c_str());
+ std::string msg = "Bad config key: " + name + "\n";
+ std::string kebab = name;
+ std::replace(begin(kebab), end(kebab), '_', '-'); // convert from snake_case to kebab-case
+ if (options.count(kebab) > 0)
+ msg += "Did you mean '" + kebab + "'?\n";
+ msg += "Existing config keys:\n";
+ for (auto const& elm : options)
+ msg += " " + elm.first + ": (" + elm.second->get_type_name() + ")" + elm.second->get_string_value() + "\n";
+ throw std::out_of_range(msg);